Paper shredder



FIG. 1 is a front elevational view of a paper shredder showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof; the right side view being a mirror image of the left side view;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a perspective view thereof. 

The ornamental design for a paper shredder, as shown and described. 